After running the Bol.com API you might encounter some errors in the Preview step of the API. If you see the "INSUFFICIENT_PERMISSIONS" error in the Preview step of your Bol.com API you can follow the steps below to solve the error.
In your project navigate to the Preview step of your Bol.com API and download the errors as a CSV file.
Open the errors file and check if the products with the error are categorized correctly. If the chosen category or product type is incorrect, for example, if a Windows laptop is accidentally classified as an "Apple" product, fix the categorization in the Categories step or the product type in the Attributes step.
If you have chosen the correct categories for your products and still receive the error, go to the Bol.com partnerplatform webpage for Verkooprechten (only available in Dutch): https://partnerplatform.bol.com/verkopen/tips-voor-je-winkel/verkooprechten. On this webpage choose the category and if available subcategory of your products.
Read the conditions ("voorwaarden") and fill out the application ("aanvraag") to be accepted by Bol.com to get permission to sell the products.
That's it! Now you can wait for a reply from Bol.com about your application and when your application has been accepted the errors will disappear from your Bol.com API.